public Ast.Resource Parse(TextReader input)
{
var ps = new FtlParserStream(input);
ps.SkipBlankLines();
var entries = new List <Ast.Entry>();
Ast.Comment lastComment = null;
while (ps.Current != Eof)
{
var entry = GetEntryOrJunk(ps);
int blankLines = ps.SkipBlankLines();
// Regular Comments require special logic. Comments may be attached to
// Messages or Terms if they are followed immediately by them. However
// they should parse as standalone when they're followed by Junk.
// Consequently, we only attach Comments once we know that the Message
// or the Term parsed successfully.
if (entry is Ast.Comment comment &&
blankLines == 0 && ps.Current != Eof)
{
// Stash the comment and decide what to do with it in the next pass.
lastComment = comment;
continue;
}
if (lastComment != null)
{
if (entry is Ast.MessageTermBase mt)
{
mt.Comment = lastComment;
if (_withSpans)
{
mt.Span.Start = lastComment.Span.Start;
}
}
else
{
entries.Add(lastComment);
}
// In either case, the stashed comment has been dealt with; clear it.
lastComment = null;
}
// No special logic for other types of entries.
entries.Add(entry);
}
var res = new Ast.Resource(entries);
if (_withSpans)
{
res.AddSpan(Position.Start, ps.GetPosition());
}
return(res);
}
public void Serialize(TextWriter writer, Ast.Resource resource)
{
if (resource == null)
{
throw new ArgumentNullException(nameof(resource));
}
if (writer == null)
{
throw new ArgumentNullException(nameof(resource));
}
State state = 0;
var indentingWriter = new IndentingWriter(writer);
foreach (var entry in resource.Body)
{
if (this._withJunk || !(entry is Ast.Junk))
{
SerializeEntry(indentingWriter, entry, state);
state |= State.HasEntries;
}
}
}
